Add ServiceStack Reference codegen issues

Hello.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using ServiceStack;

namespace AddSsRefHost.ServiceModel
{
    [Route("/hello/{Name}")]
    public class Hello : IReturn<HelloResponse>
    {
        public string Name { get; set; }
        public NestedClass NestedClassProp { get; set; }
        public EnumType EnumProp { get; set; }

        // This will generate a class definition "public partial class Hello.NestedClass"
        public class NestedClass
        {
            public string Value { get; set; }
        }
    }

    // Enum types aren't included in the generated code
    public enum EnumType
    {
        Value1,
        Value2
    }

    // This will generate a class definition "public partial class QueryResult<ResponseItem>"
    public class HelloResponse : QueryResult<ResponseItem>
    {
        public string Result { get; set; }
    }

    public class ResponseItem
    {
        public string Value { get; set;}
    }

    public abstract class QueryResult<TItem>
    {
        public List<TItem> Items { get; set; }
    }

    /* The generated code for the above looks like this, when using the 4.0.32 MyGet build:

    [Route("/hello/{Name}")]
    public partial class Hello
        : IReturn<HelloResponse>
    {
        public virtual string Name { get; set; }
        public virtual Hello.NestedClass NestedClassProp { get; set; }
        public virtual EnumType EnumProp { get; set; }
    }

    public partial class Hello.NestedClass
    {
        public virtual string Value { get; set; }
    }

    public partial class HelloResponse
        : QueryResult<ResponseItem>
    {
        public virtual string Result { get; set; }
    }

    public partial class QueryResult<ResponseItem>
    {
        public QueryResult()
        {
            Items = new List<ResponseItem>{};
        }

        public virtual List<ResponseItem> Items { get; set; }
    }

    public partial class ResponseItem
    {
        public virtual string Value { get; set; }
    }

     */
}